Centromere pracroemosome Anatom p(short arm) q (long arm) 3456 Size Banding pattern( giemsa stain) :昌翡異甾 Heterochromatin异染色质 789101112 (inactive, condensed)-dark Euchromatin常染色质 131415161718 (active, decondensed)-light 州s镇“ 19202122XYChromosome Anatomy • Centromere placement • p (short arm) • q (long arm) • Size • Banding pattern (Giemsa stain) – Heterochromatin 异染色质 (inactive, condensed) - dark – Euchromatin 常染色质 (active, decondensed) - light